Coke-oven-valve construction



Jan. 14, 1930. J. VAN ACKEREN 1,743,410

COKE OVEN VALVE CONSTRUCTION Filed Sept. 9, 1921 3 Sheets-Sheet 1 Jan. 14, 1930.v J V K N 1,743,410 7 COKE OVEN VALVE CONSTRUCTION Filed Sept. 9. 1921 3 Sheets-Sheet 2 1930- J. VAN ACKE RE N COKE OVEN VALVE CONSTRUCTION 3 Sheets-Shem; a

Filed Sept. 9. 1921 Patented Jan. 14, 1930 U NIT-ED S T AT E S PATENT o'FF-rcE JOSEPH V-AN AGK-EBEN, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOZR/TO KOZEPERS COMPANY, OF ,PITT-SBIJ'RGH, PENNSYLVANIA, A "CORPORATION OF 'PENNSYLVANIA- V COKE-OVEN-VALVE GONSTRUCTlQN Application :filed .September 9,1921. Serial 110,499,534.

This invention relates to an improved valve construction that is :o'fespecial utility in conjunction with Joy-product coke ovens; the in vent-ion has for an objectto provide a valve, particularly of the mushroom type, which avoids leakages of gaseous media past the valve, w-hen the va lvei-s closed. A valve constructec l in accordance with the invention has an important application in coking retort oven-s designed tor the the employment of an extrarneouslvderived fuel (gas, such "as producer :gas, whether the coke oven be -o- 'f the combination type exemplified in the Letters Patent to Joseph Becker, No. 1,416,322, granted may1'6, 1922, or'oflthe ordinary gas :oven type that is intended solely for the em. ployment of an extraneously derived gas, as the fuel. V

In addition to :the general objects recited ab0ve,=the invent-ion ihilS tor-obj ects' such other improvements and "advantages in construction or operation, as are found to obtain in the structures and devices herein described or claimed.

In the accompanying drawings, forming a *part of "this z'sp'ecificati'on and showing, for purposesofrexernplification, a preferred form and manner in which the invention :may be embodied and practiced, :bntvvithout limiting the claimed invention to such illustrative in stance or instances Figure 1 is a fragmentary sectional elevation :of a byproduct coking plant or battery, showing a :portion ofrthe mechanismforcontrolling thefflo waof thegaseous me'di'artlrrough the'flue and :regenerativeareas of fiheb'attery, said mechanism being equipped "with an improved valve-rconstructed in accordance with the :presentrinvention .Fig. Bis -'a top plan view :of la flowbox tin vithich the valve is incorporated, portions of the mechanism being vremoved for the purpose of illustratingimoresclearly2therconstruction of the flow box;

Fig. 3isanothertop plan'vliew of the iio-W box, .shoW-ing the parts in the (operative :relation employed'when the :flow :box is utilized for directing into :a 'communica'bly connected regenerator tan cextraneously+derived gas, suchzas producer gas;

Fig. i is a vertical sectional view of the flow box and valve construction; and

F ig. 5 is an elevational View of'the same. I

'T-he same characters of reference designate the same parts in each of the several "however, capable of other valuable applications, consequently, the scope of-the invention is not confined to the specific use and specific cm'bodi-rn'ent hereindescribed as an illustrative example.

Re'Ierring to Figure 1 of the drawings, there is illustrated a fragment ofa coke oven battery or plant ofthe by-product type,'whicl1 ip lan-t embodies in its construction :reg'enerators designated generally at 11 .and having sole channels 12 that communicate at their outer ends with flow boxes 13. Each flow box is for the purpose o'tdirecting gaseous media vin'to athe regenerator, when the, latter :is opverat-ing for in fiow, zit-I151, ion reversal of the flow, for directing the avasteigasejs fromthe out low operating negenerator into an exhaust channel 14 ,by 'lneansiof which the interior ofsaid fiowbox maybe placed incommunication with the usual stack tunnel, not hereiniillustrated,"but fullyset-forth and described in the prior patent and co-pending application above identified.

The present "invention is chiefly concerned with the valve construction employed "in the tflowbox 1-3 d'or shutting off the latter from communication with the-exhaust passage 14 and'the-stack tunnel, whensaid flow box 1'3 :and its communicably connected regenerator :11 are operating for inefloW; As Shownythe ;flow;b'ox;embodies in its constrnctionahollow casing 15 provided with an upper valve chamber 16 that is communicably connected through a port 17 with a lower valve chamber 18. The lower valve chamber 18 is directly connected, with the exhaust channel 14 through a port 19. With this construction gaseous media, in order to reach the exhaust channel 14 from the main or upper valve chamber 16 of the flow box, must first traverse the-lower valve chamber 18. In the bottom of the said upper valve chamber 16, there is provided a seat and in the bottom of the lower or auxiliary valve chamber 18a similar seat 21.

The valve of the present invention is designed to close both the port 17 of the main valve chamber 16 and the port 19 of the lower auxiliary valve chamber 18, when said valve is in: closed position.

The valve embodies in its construction a vertical valve stem 22, provided at its lower endwith a horizontal valve body .of themushroom' variety, such as the plate member 23, for cooperation with the upper valve seat 20, and also with a lower upper and lower seats 20and 21, so that when r the valve is in closed position, the lower valve body 24 rests on its seat21 by its own weight and independently of theseating of the upper valve body 23. Consequently, the flow box 13 will be cut off from the exhaust channel 14, by the independent seating of the lower valve body 24, should the upper valve body 23 not seat tightly, from any cause, such as a possible short stroke, or accidental sticking of its operating mechanism hereinafter described. a

In coke oven operation, it is necessary to maintain a pressure differential between the exhaust channel 14 and the interior of the. flow box 13, in order to effect the discharge through the channel 14 of the waste gases from the regenerator 11, when said regenerator and flow box are operating for out-flow. With the double valve chamber and valve construction of the invention, the security against leakages past the seated valve bodies 23, 24 is greatly augmented, not only by reason of the more tortuous passage through which leaking gases must pass, but also by 7 reason of the auxiliaryrvalve chamber 18 in which the pressure will be mediate that" of the relatively high pressure in the upper valve chamber 16 and the relatively low pressure in the exhaust channel 14, so that differences in pressure on the opposite sidesof each valve of an operating lever 28 fastened on a short or stub shaft 29; Also secured to the stub shaft 29 is the valve-operating arm '30, that may be swung to open or close the valve, by I means of the usual operating cable, such as is disclosed 1n thehereinbefore mentloned copending application of Joseph Becker. ,Be-

low its fulcrum, the arm 30 is provided with a depending finger 31 adapted to engage stops 32 and 33 for delimiting the swinging movement of the arm 30 in opposite directions. When said arm 30 is moved in onedirection, the lever 28 is elevated to engage the upper collar 26 on the shank 22 to elevate both valve bodies 23 and 24 and open the valve. verse movement of the said arm 30, the lever 28 is lowered permitting the valve to close.

The flow box illustrated in the accompanying drawing may be employed alternatively for the in-flow of air intothe regenerator 11.

fastened tightly on the top of the flow box by means of clamps 36. Fuel gas or other On rea For this purpose, said flow box is provided with a lid 34 and lid-operating mechanism' 35. When, however, the flow, box is em-, .ployed for in-flow of fuel gas, the lid 34 is gaseous media may be directed into the in- .terior of the flow box through port 37.

The invention as hereinabove set forth is embodied in a particular form of construction, but may be variously embodied within the scope of the claims herein made.

I claim; 7

1. A flow box, for regenerative heating structures, having an upper valve chamber connected by a port with a lower valve chamher to constitute a continuous passage for the gas flow, the said lower valve chamber being connected by a port with an exhaust channel; vertically movable mushroom valve bodies for srespectively opening or closing the ports of said upper andxlower chambers; flexible means connecting said valve bodies together,

said flexible means being greaterv in length than the distance between the points on.

which the. respective valve bodies seat, whereby the lower valve body may seatindependently of the seating of the upper valve'body; and mechanism operatively connected with said upper valve body for raising and lowering both said valve bodies; substantially as specified. r l

2. A flow box,-for regenerative heating structures, having a main valve chamber conher to constitute a continuous passage for the gas flow, the said auxiliary valve chamber being also connected by a port with an ex- 'nected by a port to an auxiliary valve cham- Q haustchannel and acting to interpose between said main chamber and said valve chamber a pressure mediate that of the main valve chamber and the exhaust channel; individual valve bodies for opening and closing the ports of both said valve chambers; and an operating mechanism common to both said valve bodies; substantially as specified;

3. In a valve construction for flow boxes adapted for use with regenerative coke ovens in combination: a regenerator sole channel; an exhaust channel in which during normal. operation is maintained a lower pressure than n the rcgenerator sole channel, whereby [EISQOUS media may flow from said regenera- LOI' sole channel to said exhaust channel, when the regenorator is operating for out-flow; a flow box communicably connected with said regenerator sole channel and having a main valve chamber connected by a port with an auxiliary valve chamber, the said auxiliary valve chamber being also connected by a port, in series relation to the aforesaid port, with said exhaust channel and acting to interpose between said regenerator and said exhaust channel a pressure mediate that of the regenerator sole channel and the exhaust channel; and valve means for contemporaneously closing the ports of both said valve chambers; substantially as specified.

4. A valve construction, for the purpose herein set forth, comprising, in combination: a flow box provided with an upper valve chamber connected by a port with a lower valve chamber to constitute a continuous passage for the flow through the valve, the said lower valve chamber also having a port; vertic-ally movable mushroom valve bodies for respectively opening or closing the ports of said upper or lower chambers; flexible means connecting said valve bodies together, said flexible means being greater in length than the distance between the points on which the respective valve bodies seat, whereby the lower valve body may seat independently of the seating of the upper valve body; and mechanism operatively connected with said upper valve body for raising and lowering both said valve bodies; substantially as specified.

5. A valve construction, for the purpose herein set forth, comprising, in combination: a flow box having a main valve chamber connected by a port with an auxiliary valve chamber to constitute a continuous passage for the flow through the valve, the said auxiliary valve chamber also having a port, in series relation to the aforesaid port; valve bodies for respectively opening or closing the ports of said valve chambers; means connecting said valve bodies together for permitting one of said valve bodies toseat independently of the other; and mechanism operatively connected with the latter valve body for operating both said valve bodies; substantially as specified. a

6. A valve construction, for the purpose herein set forth, comprising, in combination; a flow box having a main valve chamber and an auxiliary valve chamber constituting a continuous passage for the flow through the valve; mushroom valve bodies for respectively controlling the flow in series through said chambers; means connecting said valve bodies together for permitting one to seat independently of the other, and means for raising and lowering both said valve bodies; substantially as specified.

In testimony whereof, I hereunto afiix my signature this 31 day of August, 1921.

JOSEPH VAN ACKEREN. 

